Adhering sealing member to metal with weld heat

B - Operations – Transporting – 23 – K

Patent

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Details

B23K 31/02 (2006.01) B23K 11/00 (2006.01)

Patent

CA 2345890

A method of securing a sealing washer to one surface of a metal sheet while welding a head of a fastener to a second surface of a metal sheet, the method comprising: compressing the head onto the second surface of the sheet between a first electrode engaging the head and a second electrode engaging the first surface of the sheet, welding the head to the second surface of the sheet by electrical resistance welding to heat the first surface of the sheet proximate to the first electrode, urging a sealing washer into the heated first surface with the second electrode to heat the sealing washer and thereby bond the sealing washer to the first surface.

Il s'agit d'une méthode permettant de fixer une rondelle d'étanchéité à une surface de feuille de métal, pendant le soudage d'une tête de pièce de fixation à une seconde surface de feuille de métal. Cette méthode comprend les opérations qui suivent. La compression de la tête sur la seconde surface de la feuille, entre une première électrode engageant la tête, et une seconde électrode engageant la première surface de la feuille; le soudage de la tête à la seconde surface de la feuille par soudage à résistance électrique, afin de chauffer la première surface de la feuille près de la première électrode; la poussée d'une rondelle d'étanchéité dans la première surface chauffée avec la seconde électrode, pour chauffer la rondelle d'étanchéité, et donc faire adhérer ladite rondelle à la première surface.

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